This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A004975 #18 Jul 04 2019 15:25:32
%S A004975 0,15127,30254,45381,60508,75635,90762,105889,121016,136143,151270,
%T A004975 166397,181524,196651,211778,226905,242032,257159,272286,287413,
%U A004975 302540,317667,332794,347921,363048,378175,393302,408429,423556,438683,453810,468937,484064,499191,514318,529445,544572,559699
%N A004975 a(n) = ceiling(n*phi^20), where phi is the golden ratio, A001622.
%C A004975 Not the same as A004955: a(n) != A004955(n) for n=7564. [_Joerg Arndt_, Sep 17 2013]
%H A004975 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/NonRecursions.html">Non Recursions</a>
%F A004975 a(n) >= A004955(n). [_R. J. Mathar_, Oct 28 2008]
%t A004975 With[{c=GoldenRatio^20},Ceiling[c*Range[0,40]]] (* _Harvey P. Dale_, Jul 17 2018 *)
%K A004975 nonn
%O A004975 0,2
%A A004975 _N. J. A. Sloane_